Topic: Big Data
Which of the following is used for storing unstructured data in Big Data environment?
- A. In-memory database
- B. Relational database
- C. NoSQL database
- D. SQL database
Answer: C. NoSQL database
Explanation: NoSQL (Not Only SQL) databases are non-tabular and support flexible schemas, making them ideal for storing unstructured and semi-structured data common in Big Data environments.